sypher



(Nb Model.) 2 Sheets-Sheet 1.

A. J. SYPHER. ROCK DRILL TRIPOD.

No. 511,103. Patented Dec. 19, 1893.

' (No Modem 2 shegts s'heetfi.

A; J. SYPHER. ROCK DRILLTEIPOD. No. 511,103. Patented Dec. 19, 1-893.

'- J **M.M M

UNITED STATES PATENT OFFICE.

ABRAHAM J. SYPHER, OF CHICAGO, ILLINOIS, ASSIGNOR. lO MILAN C.

' BULLOCK, ()F SAME PLACE.

nook-mm. TRIPOD.

SPEGIFICATIQN forming part of Letters Patent No. 511,103, dated December 19, 1893.

Application filed January 11, 1893. Serial No. 457,979. (No model.)

To (1Z3 whom it may concern:

Be it known that I, ABRAHAM J. SYPHE-R,

" of Ghicago,in the county of Cook and State of or tripods.

Its object is to provide an improved construction in devices of this character and to this end my invention consists in the parts, improvements and combinations hereinafter described and particularly set forth in the appended claims.

In the accompanying drawings: Figure l is a side elevation, partly in section, of a rock drill support embodying my invention, with a drill in place thereon. Fig. 2 is a horizontal section on the line 2-2 of Fig. 1. Fig. 3 is a front detail view showing the supporting wheel and spacing pin. Fig. 4 is a detail section on the line 4-4 of Fig. 2. Fig. 5 is a plan detail of a construction slightly modified from that shown in the preceding figures, the

spacing pin being attached to the wheel supporting bar instead of to the platform of the drill support. Fig. 6 is a front elevation of a portion of an ordinary tripod with my improved spacing and supporting wheel applied thereto. Fig. 7 is a horizontal section of the same. Fig. 8 is a side elevation of the same.

Referring to the construction shown in Figs. 1, 2, 3 and 4, A designates a base plate or platform whichis preferably of triangular form, and is shown as made of a single sheet of plate metal, although it may be of any other suitable shape and material if desired. Said plate is supported by short stiff legs B, B, B, one at each corner, said legs being provided with enlarged heads I) b b and screw-threaded shanks which pass down through suitable apertures in the platform and are provided with screw-threaded nuts 12 b 19 between which and said enlarged heads the platform is clamped and the legs thus rigidly secured in place. Said platform is also shown as cut away or recessed on one side at A to permit the drilling point to strike within the base line of the supporting legs. Secured to the upper side of the platform is a frame work for supporting the drill D, consisting, in this instance, of a single standard 0 pivoted to the platform near the center thereof and provided at its upper end with acircular recess within which the drill back disk D is adjustably clamped by the usual pivot bolt D said standardswinging on its pivot in a plane at right angles to the plane of the drill back disk, whereby angular adjustment of the drill may be effected in any direction, and being supported in the desired position by means of an extensible brace rod E pivoted at its upper end to the standard O and at its lower end to the platform A in the plane of movement of said standard 0. Provision is also made for the. vertical and pivotal adjustment of the drill by making the standard C extensible in like manner with the brace rod E, both consisting, to this end, of lower tubular sections 0', E and upper cylindrical sections 0 E sliding within the lower sections 0 E, and adjustably secured therein by set screws 0 e near, the upper ends of the vsaid tubular lower sections, the latter being provided at said upper ends with tightly fitting collars c 6', serving to provide additional length of bearing for said set screws and to strengthen the said. sections at this point. Parallel lugs c on the collar 0, between which the upper end of the section E of the brace rod E is secured by the pivot bolt 0 conveniently afiord the pivotal connection between the brace rod and standard, while similar lugs e formed by bifurcating the lower end of the section E of the brace rod E, embrace a lug on the platform A, which lugis formed, in this instance, by the enlarged head 12 of the leg 13*, and are secured thereto bya pivot bolt e thus affording the pivotal connection between the said brace rod'E and platform A. The pivot joint between the standard C and platform A is also shown as formed by parallel lugs a on the platform, between which the lower end of the standard G is secured-by a pivot bolt a; said lugs being provided in this instance by cutting out and bendingup the metal of the platform.

Upon the platform A the attendant may I conveniently stand during the operation of the drill and thus maintain the stability of the structure without the use of the usual weights, thereby avoiding the expense of providing said weightsand the inconvenience of handling them. A low first cost of manufacture is further secured by the fact that the platform or base plate with its standard se-' curing lugs may be made from a single piece of sheet metal, and by the fact that thesupporting legs are exactly alike and are consequently interchangeable.

For the purpose of quickly and accurately locating the drill support for each of a series of holes which it is desired shall be spaced at regular distances apart, I provide on the support a spacing point or pin F capable of beingsecured in fixed relation to the drilling point at a distance therefrom equal to the distance desired between the adjacent holes of the series, said pin being adapted to engage the ho1e last drilled and to thus bring the said drilling point over the spot where the next hole should be located. Such spacing pin F is preferably made adjustable on the platform in order that its distance from the drilling point, and consequently the common distance between the adjacent holes of the series, may be varied at will, and to this end said pin is mounted in the end of a bar I-I adjustably secured to the platform and projecting over the recess A in the edge thereof, said pin being removably clamped in an aperture in the arm H by means of a set-screw H. The adjustment of the bar H is, in this instance, effected by means of parallel slots A A in the platform and clamping bolts h h passing through said slots and through suitable apertures in the arm H and serving to clamp the latter to the platform at any desired point of the length of the slots. Similar slots are provided at each side of the platform so that the pin F can be located on either side of the drilling point, as desired. In addition to the spacing point F, I provide a guide finger I, adapted to be secured to the support on the opposite side of the drilling point d from the said spacing pin and normally in line with said pin and point, and designed to aid. the attendant in securing the exact alignment of the several holes of the series. Such finger, in this instance, consists of a piece of metal bentto an L-shape and attached to the platform A by means of a perforation in its upper horizontal partthrough which passes one of the supporting legs (the leg B in the drawings), the finger being held or clamped between the clamping nut b on the leg and the under side of the platform A, with its point extending downwardly to within a short distance of the! ground. VVh'en the spacing pin is brought into engagement with the hole last drilled drill and support without lifting them bodily from off the ground, a wheel W is mounted on the supportin such manner as to normally stand in proximity to the surface of the ground at a point without the base line of the supporting legs and is adapted to serve as a rolling support upon which the drill and its support may be trundled along in moving 1t, in the same manner as a wheelbarrow upon its single wheel. In the instance illustrated, said wheel is carried upon the end of a downwardly and outwardly projecting bar J, secured to the platform. In the construction illustrated the bar J passes through apertures in theenlarged heads I) b of the supporting legs B B and is held therein by set-screws b and a bifurcated head J is rigidly attached to the end of the bar between the arms of which the supporting wheel W 18 ournaled by means of a suitable pin j. When this construction is used in connection with the spacing pin the arm supporting said pin may conveniently be adjustably mounted on the rod J instead of being bolted directly to the platform. Such a modification is shown in 5, in which'the arm G supporting the spacing pin is provided with an aperture engaging the rod J and is adj ustably clamped in place by a set screw G.

The features of my invention relating to the Wheel, spacing pin and guide finger are equally useful when applied to the ordinary form of tripod, and accordingly in Figs. 6, 7 and 8 I have shown them so applied. In this construction the point sections K of the tripod legs are provided'with eye-bolts inserted in apertures in said sections and clamped in place by nuts k, said eye-bolts serving to engage and support the carrying bar J to which are adjustably secured the spacing pin F and guide finger I in a similar manner and to the same end as hereinbefore described.

I claim as my invention 1. A rock drill support, comprising a platform upon which the attendant may stand,a

standard composed of a lower tubular section pivoted at its lower end to the platform and an upper section sliding within the tubular section and adjustably secured therein, said upper section being provided with a circular recess adapted to have the drill back disk'pivotally bolted therein, a brace bar composed of a lower tubular section pivoted at its lower end to the platform and an upper section pivoted to the upper portion of the standard and sliding adjustably in said lower section,substantially as described.

2. A rock drill tripod, comprising a sheet metal platform upon which the attendant may stand, parallel lugs formed by parts out from the metal of the platform, a drill carrying standard pivoted between the lugs, and an adj ustably extensible brace rod pivoted at its upper end to the standard and at its lower end to the platform,substantially as described.

3. A rock drill tripod, comprising a platform upon which the attendant may stand,

IIO

provided with apertures on its corners, supporting legs provided with screw-threaded shanks extending through the apertures, enlarged heads engaging the upper side of the platform and nuts on the screw-threaded shanks engaging the under side of the platform and clamping the legs in position, a drill carrying standard pivoted to the platform, an

adjustable extensible brace bar pivoted at its upper end to the standard and bifurcated atits lower end to embrace the enlarged head of one of the supporting legs, and a bolt engaging corresponding apertures in the bifurcated end of the brace bar and in the enlarged head to pivotally connect the same, substantially as described.

i. A rock drill support provided with a downward projecting spacing pin adapted to engage a previously drilled hole, said pin beiug adj ustably secured to the support, whereby it may be set at different distances from the drilling point, substantially as described.

5. A rock drill support, comprising a platform upon which the attendant may stand, supporting legs for the platform, a drill carrying standard secured upon the platform, an arm adjustably secured to and extending beyond the'edge of the same,.and a downward projecting spacing point secured to the said arm and adapted to enter a previously drilled hole, substantially as described. c

6. A rock drill support, comprising a platform upon which the attendant may stand, supporting legs for the platform, a drill carrying standard secured upon the platform, an arm adjustably secured to said plat form and extending beyond the edge of the same, said arm being secured to the platform by means of bolts passing through slotsin the platform, and a downwardly projecting spacing point secured to the saidarm and adapted to enter a previously drilled hole, substantially as described.

7. A rock drill support provided with rigid pointed supporting legs, a wheel mounted on the support in proximity to the ground and without the base line of saidsupporting legs,

and a spacing point secured to the support and adapted to engage a previously drilled hole, substantially as described.

8. A rock drill support, comprising a drill carrying frame having supporting legs, a bar secured to the frame and projecting beyond the base line of the supporting legs, an arm adjustably secured upon said bar, a downward projecting spacing pin secured to the arm, and awheel journaled at the outer end of Y the arm in proximity tothe ground, substantially as described. t

9. A rock drill support, comprising a tri- 6o angular platform on which the attendant may stand and provided with apertures in its corners, supporting legs provided with screwthreaded shanks extending through said apertures, enlarged heads engaging the upper side of the platform and nuts upon the screw-, threaded shanks engaging the under side of the platform and clampingsaid legs in posi-. tion, a drill carrying standard on the platform, a bar supported in apertures in the enlarged heads of the supporting legs and extending beyond the base line of the same and a wheel journaled in the outer end of said bar, substantially as described.

10. A rock drill support, comprising a drill carrying frame having supporting legs, a downward projecting spacing pin secured to the said frame and adapted to engage a previously drilled hole to facilitate the location, of the support for drilling another hole, and a guide finger secured to the frame on the opposite side of the drilling tool from the spacing pin and in line with said point and ,pin, substantially as described.

11. A rock drill support, comprising a triangular platform on which the attendant may stand, provided with apertures in its corners, supporting legs provided with enlarged heads engaging the upper side of the platform, and nuts on the screw-threaded shanks engaging the lower side of the platform and clamping said legs in position, a drill carrying standard secured upon the platform, aspacing pin adjustably secured to the platform and adapted to engage a previously drilled hole, and a guide finger having an aperture at its rear end to engage the screw-threaded shank of a supporting leg, the point of said guide finger and the spacing pin being so located as to normally stand on opposite sides of but in line with the drilling tool, substantially as described.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

ABRAHAM J. SYPH ER.

ICC

Witnesses:

O. CLARENCE PooLE, HENRY W. CARTER. 

